DirectoryInfo Klasse

Definition

public ref class DirectoryInfo sealed : System::IO::FileSystemInfo

public sealed class DirectoryInfo : System.IO.FileSystemInfo

[System.Serializable]
public sealed class DirectoryInfo : System.IO.FileSystemInfo

[System.Serializable]
[System.Runtime.InteropServices.ComVisible(true)]
public sealed class DirectoryInfo : System.IO.FileSystemInfo

type DirectoryInfo = class
    inherit FileSystemInfo

[<System.Serializable>]
type DirectoryInfo = class
    inherit FileSystemInfo

[<System.Serializable>]
[<System.Runtime.InteropServices.ComVisible(true)>]
type DirectoryInfo = class
    inherit FileSystemInfo

Public NotInheritable Class DirectoryInfo
Inherits FileSystemInfo

Vererbung

Object

FileSystemInfo

DirectoryInfo

Vererbung

Object

MarshalByRefObject

FileSystemInfo

DirectoryInfo

Attribute

SerializableAttribute ComVisibleAttribute

Beispiele

Im folgenden Beispiel werden einige der Standard Member der DirectoryInfo -Klasse veranschaulicht.

using namespace System;
using namespace System::IO;
int main()
{
   
   // Specify the directories you want to manipulate.
   DirectoryInfo^ di = gcnew DirectoryInfo( "c:\\MyDir" );
   try
   {
      
      // Determine whether the directory exists.
      if ( di->Exists )
      {
         
         // Indicate that the directory already exists.
         Console::WriteLine( "That path exists already." );
         return 0;
      }
      
      // Try to create the directory.
      di->Create();
      Console::WriteLine( "The directory was created successfully." );
      
      // Delete the directory.
      di->Delete();
      Console::WriteLine( "The directory was deleted successfully." );
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine( "The process failed: {0}", e );
   }

}

using System;
using System.IO;

class Test
{
    public static void Main()
    {
        // Specify the directories you want to manipulate.
        DirectoryInfo di = new DirectoryInfo(@"c:\MyDir");
        try
        {
            // Determine whether the directory exists.
            if (di.Exists)
            {
                // Indicate that the directory already exists.
                Console.WriteLine("That path exists already.");
                return;
            }

            // Try to create the directory.
            di.Create();
            Console.WriteLine("The directory was created successfully.");

            // Delete the directory.
            di.Delete();
            Console.WriteLine("The directory was deleted successfully.");
        }
        catch (Exception e)
        {
            Console.WriteLine("The process failed: {0}", e.ToString());
        }
        finally {}
    }
}

open System.IO

// Specify the directories you want to manipulate.
let di = DirectoryInfo @"c:\MyDir"
try
    // Determine whether the directory exists.
    if di.Exists then
        // Indicate that the directory already exists.
        printfn "That path exists already."
    else
        // Try to create the directory.
        di.Create()
        printfn "The directory was created successfully."

        // Delete the directory.
        di.Delete()
        printfn "The directory was deleted successfully."
with e ->
    printfn $"The process failed: {e}"

Imports System.IO

Public Class Test
    Public Shared Sub Main()
        ' Specify the directories you want to manipulate.
        Dim di As DirectoryInfo = New DirectoryInfo("c:\MyDir")
        Try
            ' Determine whether the directory exists.
            If di.Exists Then
                ' Indicate that it already exists.
                Console.WriteLine("That path exists already.")
                Return
            End If

            ' Try to create the directory.
            di.Create()
            Console.WriteLine("The directory was created successfully.")

            ' Delete the directory.
            di.Delete()
            Console.WriteLine("The directory was deleted successfully.")

        Catch e As Exception
            Console.WriteLine("The process failed: {0}", e.ToString())
        End Try
    End Sub
End Class

Im folgenden Beispiel wird veranschaulicht, wie ein Verzeichnis und dessen Inhalt kopiert werden.

using System;
using System.IO;

class CopyDir
{
    public static void CopyAll(DirectoryInfo source, DirectoryInfo target)
    {
        if (source.FullName.ToLower() == target.FullName.ToLower())
        {
            return;
        }

        // Check if the target directory exists, if not, create it.
        if (Directory.Exists(target.FullName) == false)
        {
            Directory.CreateDirectory(target.FullName);
        }

        // Copy each file into it's new directory.
        foreach (FileInfo fi in source.GetFiles())
        {
            Console.WriteLine(@"Copying {0}\{1}", target.FullName, fi.Name);
            fi.CopyTo(Path.Combine(target.ToString(), fi.Name), true);
        }

        // Copy each subdirectory using recursion.
        foreach (DirectoryInfo diSourceSubDir in source.GetDirectories())
        {
            DirectoryInfo nextTargetSubDir =
                target.CreateSubdirectory(diSourceSubDir.Name);
            CopyAll(diSourceSubDir, nextTargetSubDir);
        }
    }

    public static void Main()
    {
        string sourceDirectory = @"c:\sourceDirectory";
        string targetDirectory = @"c:\targetDirectory";

        DirectoryInfo diSource = new DirectoryInfo(sourceDirectory);
        DirectoryInfo diTarget = new DirectoryInfo(targetDirectory);

        CopyAll(diSource, diTarget);
    }

    // Output will vary based on the contents of the source directory.
}

open System.IO

let rec copyAll (source: DirectoryInfo) (target: DirectoryInfo) =
    if source.FullName.ToLower() <> target.FullName.ToLower() then
        // Check if the target directory exists, if not, create it.
        if not (Directory.Exists target.FullName) then
            Directory.CreateDirectory target.FullName |> ignore

        // Copy each file into it's new directory.
        for fi in source.GetFiles() do
            printfn $@"Copying {target.FullName}\{fi.Name}"
            fi.CopyTo(Path.Combine(string target, fi.Name), true) |> ignore

        // Copy each subdirectory using recursion.
        for diSourceSubDir in source.GetDirectories() do
            target.CreateSubdirectory diSourceSubDir.Name
            |> copyAll diSourceSubDir

let sourceDirectory = @"c:\sourceDirectory"
let targetDirectory = @"c:\targetDirectory"

let diSource = DirectoryInfo sourceDirectory
let diTarget = DirectoryInfo targetDirectory

copyAll diSource diTarget

// Output will vary based on the contents of the source directory.

Imports System.IO

Class CopyDir
    Shared Sub CopyAll(ByVal source As DirectoryInfo, ByVal target As DirectoryInfo)
        If (source.FullName.ToLower() = target.FullName.ToLower()) Then
            Return
        End If

        ' Check if the target directory exists, if not, create it.
        If Directory.Exists(target.FullName) = False Then
            Directory.CreateDirectory(target.FullName)
        End If

        ' Copy each file into it's new directory.
        For Each fi As FileInfo In source.GetFiles()
            Console.WriteLine("Copying {0}\{1}", target.FullName, fi.Name)
            fi.CopyTo(Path.Combine(target.ToString(), fi.Name), True)
        Next

        ' Copy each subdirectory using recursion.
        For Each diSourceSubDir As DirectoryInfo In source.GetDirectories()
            Dim nextTargetSubDir As DirectoryInfo = target.CreateSubdirectory(diSourceSubDir.Name)
            CopyAll(diSourceSubDir, nextTargetSubDir)
        Next
    End Sub

    Shared Sub Main()
        Dim sourceDirectory As String = "c:\\sourceDirectory"
        Dim targetDirectory As String = "c:\\targetDirectory"

        Dim diSource As DirectoryInfo = New DirectoryInfo(sourceDirectory)
        Dim diTarget As DirectoryInfo = New DirectoryInfo(targetDirectory)

        CopyAll(diSource, diTarget)
    End Sub
    ' Output will vary based on the contents of the source directory.
End Class

Hinweise

Verwenden Sie die DirectoryInfo -Klasse für typische Vorgänge wie Kopieren, Verschieben, Umbenennen, Erstellen und Löschen von Verzeichnissen.

Wenn Sie ein Objekt mehrmals wiederverwenden möchten, sollten Sie die instance-Methode von DirectoryInfo anstelle der entsprechenden statischen Methoden der Directory -Klasse verwenden, da eine Sicherheitsüberprüfung nicht immer erforderlich ist.

In Membern, die einen Pfad akzeptieren, kann der Pfad auf eine Datei oder nur auf ein Verzeichnis verweisen. Der angegebene Pfad kann auch auf einen relativen Pfad oder einen UNC-Pfad (Universal Naming Convention) für einen Server- und Freigabenamen verweisen. Beispielsweise sind alle folgenden Pfade akzeptabel:

• "c:\\MyDir\\MyFile.txt" in C# oder "c:\MyDir\MyFile.txt" in Visual Basic.

• "c:\\MyDir" in C# oder "c:\MyDir" in Visual Basic.

• "MyDir\\MySubdir" in C# oder "MyDir\MySubDir" in Visual Basic.

• "\\\\MyServer\\MyShare" in C# oder "\\MyServer\MyShare" in Visual Basic.

Standardmäßig wird allen Benutzern vollständiger Lese-/Schreibzugriff auf neue Verzeichnisse gewährt.

Eine Liste allgemeiner E/A-Aufgaben finden Sie unter Allgemeine E/A-Aufgaben.

Konstruktoren

Felder

Eigenschaften

Methoden

Erweiterungsmethoden

Gilt für:

Weitere Informationen

• File
• Attributes
• FileSystemWatcher
• Directory
• Path
• Datei- und Stream-E/A
• How to: Lesen von Text aus einer Datei
• How to: Schreiben von Text in eine Datei
• How to: Vorgehensweise: Lesen von bzw. Schreiben in eine neu erstellte Datendatei